I’m surprised you were able to find out about Future (from here) and not read that we’re using it to cut our paints…
I don’t think that you’re going to “kill two birds with one stone” though… not that paint needs to be sealed, if you use quality inks, sprayed well, and allowed to dry sufficiently. But the Future is just clear acrylic, mixed with acrylic paint, you just have, a bunch of colored acrylic… it’s still “unsealed” acrylic. I still seal mine with pure Future, if for no other reason than that warm fuzzy feeling inside.
I used the s&f brand(s) supercrylic for sealing finished boards,and the reg. s&f floor acrylic sealer for the same.
I read the contents in both and even though I have never used the Iris brands of floor sealers for paint mixing,I would be lead to believe that it would cause problems,due to the amounts of distillens,cutters,waxes,and softeners in them.
This tip and many others from Herb has proven itself time and time again.
What I’ve been doing lately is using Acrylic sealer to mask the edge of my tape lines. When taping off foam tints with acrylic paints, use a brush or spray of clear sealer to eliminate the bleed under your tape line. This works when laying down large areas of color or even those razor thin pinlines.